Re: Juju's dependencies, juju/utils and a road forward

[John Meinel]

I agree with breaking up utils. I've certainly read similar comments
elsewhere that calling something 'utils' inherently causes issues like
this, and it seems to fit with our experience.

I also agree that X stable depending on Y unstable doesn't seem right.
Though we're also very bad at ever making a genuine release of
dependencies. (it's a lot of overhead if nobody else is actually consuming
them)

There are probably other small things like it is "mgo/bson" where bson
should really be it's own package.

Also some questions about how well packages avoid leaking. (charmstore uses
mgo as a backend. if it doesn't expose those types then we probably don't
care if some of our tree depends on it while the other part doesn't. At
least as a transition phase.)

John
=:->

On Apr 4, 2018 06:19, "Tim Penhey"  wrote:

Which then begs the question...

Why do we have stable gopkg.in branches depending on unstable branches?

i.e. gopkg.in/juju/charmstore.v5 depending on
gopkg.in/macaroon-bakery.v2-unstable?

This seems to smell bad.



Tim


On 04/04/18 14:17, Tim Penhey wrote:
> As a follow on...
>
> I'd like to move juju to only use "stable" dependency branches. No more
> '-unstable'.
>
> Tim
>
> On 04/04/18 12:52, Tim Penhey wrote:
>> Hi folks,
>>
>> Juju has a problem with its dependencies. We have been trying to upgrade
>> a number of our dependencies recently have have been hitting road
>> blocks. Mostly because of changes to common libraries that are
>> incompatible with other libraries that we use.
>>
>> I'm pretty sure that the root of all these problems is the juju/utils
>> package. It has become a dumping ground for any common functions that
>> packages may want to share. However these common functions are changed
>> arbitrarily with only thoughts around how they impact a subset of the
>> downstreams of juju/utils.
>>
>> I think that the only sane way forward is to move all the functionality
>> we care about out of juju/utils into more cohesive, smaller, packages
>> that have meaningful names and you should be able to determine what they
do.
>>
>> Where the current clashes came from were a few places.
>>  1) we wanted to change our mgo dependency
>>  2) a new file path utility function was wanted
>>  3) the debugstatus package inside utils was updated in a backward
>> incompatible way
>>
>> The root problem here is that the utils package tries to do too many
>> things. Any package called "utils" should be a warning, and we should
>> have listened to Dave Cheney when he brought this up originally.
>>
>> I think the way forward is to break up the utils package. I'd like to
>> propose that we don't add anything new to the utils package, and only
>> deletions are allowed. We create new packages that contain the
>> functionality we require, and have them be much more controlled on their
>> own dependencies.
>>
>> Thoughts?
>>
>> Tim
>>
>

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Re: Juju's dependencies, juju/utils and a road forward

[Tim Penhey]

Which then begs the question...

Why do we have stable gopkg.in branches depending on unstable branches?

i.e. gopkg.in/juju/charmstore.v5 depending on
gopkg.in/macaroon-bakery.v2-unstable?

This seems to smell bad.


Tim

On 04/04/18 14:17, Tim Penhey wrote:
> As a follow on...
> 
> I'd like to move juju to only use "stable" dependency branches. No more
> '-unstable'.
> 
> Tim
> 
> On 04/04/18 12:52, Tim Penhey wrote:
>> Hi folks,
>>
>> Juju has a problem with its dependencies. We have been trying to upgrade
>> a number of our dependencies recently have have been hitting road
>> blocks. Mostly because of changes to common libraries that are
>> incompatible with other libraries that we use.
>>
>> I'm pretty sure that the root of all these problems is the juju/utils
>> package. It has become a dumping ground for any common functions that
>> packages may want to share. However these common functions are changed
>> arbitrarily with only thoughts around how they impact a subset of the
>> downstreams of juju/utils.
>>
>> I think that the only sane way forward is to move all the functionality
>> we care about out of juju/utils into more cohesive, smaller, packages
>> that have meaningful names and you should be able to determine what they do.
>>
>> Where the current clashes came from were a few places.
>>  1) we wanted to change our mgo dependency
>>  2) a new file path utility function was wanted
>>  3) the debugstatus package inside utils was updated in a backward
>> incompatible way
>>
>> The root problem here is that the utils package tries to do too many
>> things. Any package called "utils" should be a warning, and we should
>> have listened to Dave Cheney when he brought this up originally.
>>
>> I think the way forward is to break up the utils package. I'd like to
>> propose that we don't add anything new to the utils package, and only
>> deletions are allowed. We create new packages that contain the
>> functionality we require, and have them be much more controlled on their
>> own dependencies.
>>
>> Thoughts?
>>
>> Tim
>>
> 

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Re: Juju's dependencies, juju/utils and a road forward

[Tim Penhey]

As a follow on...

I'd like to move juju to only use "stable" dependency branches. No more
'-unstable'.

Tim

On 04/04/18 12:52, Tim Penhey wrote:
> Hi folks,
> 
> Juju has a problem with its dependencies. We have been trying to upgrade
> a number of our dependencies recently have have been hitting road
> blocks. Mostly because of changes to common libraries that are
> incompatible with other libraries that we use.
> 
> I'm pretty sure that the root of all these problems is the juju/utils
> package. It has become a dumping ground for any common functions that
> packages may want to share. However these common functions are changed
> arbitrarily with only thoughts around how they impact a subset of the
> downstreams of juju/utils.
> 
> I think that the only sane way forward is to move all the functionality
> we care about out of juju/utils into more cohesive, smaller, packages
> that have meaningful names and you should be able to determine what they do.
> 
> Where the current clashes came from were a few places.
>  1) we wanted to change our mgo dependency
>  2) a new file path utility function was wanted
>  3) the debugstatus package inside utils was updated in a backward
> incompatible way
> 
> The root problem here is that the utils package tries to do too many
> things. Any package called "utils" should be a warning, and we should
> have listened to Dave Cheney when he brought this up originally.
> 
> I think the way forward is to break up the utils package. I'd like to
> propose that we don't add anything new to the utils package, and only
> deletions are allowed. We create new packages that contain the
> functionality we require, and have them be much more controlled on their
> own dependencies.
> 
> Thoughts?
> 
> Tim
> 

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Juju's dependencies, juju/utils and a road forward

[Tim Penhey]

Hi folks,

Juju has a problem with its dependencies. We have been trying to upgrade
a number of our dependencies recently have have been hitting road
blocks. Mostly because of changes to common libraries that are
incompatible with other libraries that we use.

I'm pretty sure that the root of all these problems is the juju/utils
package. It has become a dumping ground for any common functions that
packages may want to share. However these common functions are changed
arbitrarily with only thoughts around how they impact a subset of the
downstreams of juju/utils.

I think that the only sane way forward is to move all the functionality
we care about out of juju/utils into more cohesive, smaller, packages
that have meaningful names and you should be able to determine what they do.

Where the current clashes came from were a few places.
 1) we wanted to change our mgo dependency
 2) a new file path utility function was wanted
 3) the debugstatus package inside utils was updated in a backward
incompatible way

The root problem here is that the utils package tries to do too many
things. Any package called "utils" should be a warning, and we should
have listened to Dave Cheney when he brought this up originally.

I think the way forward is to break up the utils package. I'd like to
propose that we don't add anything new to the utils package, and only
deletions are allowed. We create new packages that contain the
functionality we require, and have them be much more controlled on their
own dependencies.

Thoughts?

Tim

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